Both Gen. 1 and John 1 speak of darkness dispelled by light from God. The recreation of earth rectified some previous rebellion paving the way for Jesus to eventually reconcile material creation to Himself: making known to us the mystery of his will, according to his purpose, which he set forth in Christ as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth (Eph. 1.9-10 ESV).

In that heavenly city, in which Christians now hold their citizenship (Gal.4.25-26), we will have no need for external light sources: and the city has no need of sun or moon to shine on it, for the glory of God gives it light, and its lamp is the Lamb (Rev. 21.23 ESV). Darkness isn’t a feature of God’s dwelling but seems to be a judgment upon evil doers: The fifth angel poured out his bowl on the throne of the beast, and its kingdom was plunged into darkness (Rev. 16.10 ESV). God had previously judged the Egyptians with darkness during the time of Moses as the penultimate plague before killing their firstborn (Ex. 10.21-23).

Light and darkness in the bible is also used figuratively to refer to domains and those who belong to them:

But you are not in darkness, brothers, for that day to surprise you like a thief. For you are all children of light, children of the day. We are not of the night or of the darkness. So then let us not sleep, as others do, but let us keep awake and be sober. For those who sleep, sleep at night, and those who get drunk, are drunk at night. But since we belong to the day, let us be sober, having put on the breastplate of faith and love, and for a helmet the hope of salvation. For God has not destined us for wrath, but to obtain salvation through our Lord Jesus Christ

(1Thess. 5.4-9 ESV).

The original creation of Gen.1.1 must have involved the fall of angels in some way to trigger the chaos and darkness. Though we may only have partial glimpses of what might have happened before Adam and Eve, we know that some angels were elected: In the presence of God and of Christ Jesus and of the elect angels I charge you to keep these rules without prejudging, doing nothing from partiality (1Tim. 5.21). The unelected angels are those against whom we struggle (Eph. 6.10-18). It is those who can no longer accuse us since Christ nailed the Law’s requirements to His cross by fulfilling them (Col. 1.22, 2.14-15). All these spiritual entities were created by Jesus and for Him (Col. 1.16).

If the dinosaurs were mostly extinguished by a catastrophic strike as some evidence suggests, then it seems to make sense that a new recreation was the next order. This, then, was to prepare for the Son of God to take upon Himself flesh so that material creation might be redeemed.